20937981

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{15971}}^1$

素因数の和:16016

約数の個数: 16

約数和(自身を含む): 30666240

約数和(自身を除く): 9728259

約数列:

[1, 3, 19, 23, 57, 69, 437, 1311, 15971, 47913, 303449, 367333, 910347, 1101999, 6979327, 20937981]

約数ペア:

[(1, 20937981), (3, 6979327), (19, 1101999), (23, 910347), (57, 367333), (69, 303449), (437, 47913), (1311, 15971)]